#include <iostream>
using namespace std;// or not using
class FrontEndDeveloper {
	public:
	void developFrontEnd() {
		cout << "Front End developing" << endl;
	}
};

class BackEndDeveloper {
	public:
	void developBackEnd() {
		cout << "Back End developing" << endl;
	}
};

class Project {
	public:
	void develop() {
		fed_.developFrontEnd();
		bed_.developBackEnd();

		cout << "project developing" << endl;
	}

	private:
		FrontEndDeveloper fed_;
		BackEndDeveloper bed_;
};

int main() {
	auto project = Project{};
	project.develop();

	return 0;
}
